Telephone-switch



(No Modei.)

'J. B, SMITH. TELEPHONE SWITGH.

No. 521,274. Patented June 12,1894.

PATENT FFICE.

JOSEPH BRODIE-SMlTH, OF MANCHESTER, NEW HAMPSHIRE.

TELEPHONE-SWITCH.

SPECIFICATION forming part of Letters Patent No. 521,274, dated June 12,1894.

Application filed April 27, 1894. Serial No. 509,200. (No model.)

To all whom it may concern.-

Be it known that I, J OSEPH BRODIE SMITH, a citizen of theUnited'States, and a resident of Manchester, in the county ofHillsborough and State of New Hampshire, have invented new and usefulImprovements in Telephone- Switches, of which the following, taken inconnection with the accompanying drawings, is a specification.

This invention relates to improvements in the device showing theposition of the switch" arms when the telephone is suspended on thebracket and not in use. Fig. 2, represents a similar bottom plan viewshowing the telephone removed while in use. Fig. 3, represents avertical section on the line 33 in Fig. 1 showing the telephonesuspended at the side of the call box when not in use. Fig. 4,represents a side elevation seen from X in Fig.1; and Fig. 5, representsan elevation .seen from Y in Fig. 4E.

Similar letters refer to similar parts wherever they occur on thedifferent parts of the drawings.

A, represents one of the inclosing sides of a telephone call box asusual, and to the outside of the same is secured in a suitable manner apreferably metal forked bracket B having a slot 1) as shown. To saidbracket or other stationary part of the call box is pivoted at O a pairof slotted arms D, E, having inclined slots D E as shown in thedrawings. The respective slots 19, D, E, are all open at their outerends as shown in Figs. 1 and 2.

To the inner ends of the arms D, E, are secured the respective switchlevers d, e, which are made of suitable insulating material and providedwith the respective metal contact pieces d e as shown.

d d" d are metal electrodes against which the metal contact piece 61 onthe lever d is metallically connected when the telephone F is removedfrom its support as shown in Fig. 2; and e". e" are similar metalelectrodes against which the metal contact piece e on the lever e ismetallically connected when the said telephone F is suspended at theside of the call box as shown in Figs. 1 and 3.

The telephone F has a central metal pin f, secured to its upper endterminating as a head or projection f shown in Figs. 1 and 3.

In the drawings Figs. 1, 2 and 3 I have shown the rocker arms D, E, asarranged below the bracket B but this is not essential and in practice Imay arrange said arms above the said bracket and I wish to state that Imay arrange the bracket above or below said rocker arms withoutdeparting from the essence of my invention.

When the arms D, E, and their respective switch levers d, e, are in thepositions shown in Fig. 1 (at which time the telephone is on thesupport) the hand telephone is out out as well as the secondary windingof the induction coil at the same time as the battery circuit of thetransmitter is open and the bell magnet cut in..

When the arms D, E, and their respective levers d, e, are in theposition shown in Fig. 2 (at which'time the telephone is removed fromthe support) the hand telephone and secondary winding of the inductioncoil are cut in, the battery circuit is closed through the primarycircuit of the induction coil, and the bell magnets are cut out from theline circuit by the wire connections usually employed in telephones andneed not here be referred to or described in detail.

If the telephone has been used and it is desired to hang it up on theside of the call box all that is necessary to do is to place the shank fin the slot 1) on the bracket B and press it toward the box causing itto .enter the inclined slots D E by which the arms D, E, and theirswitch levers d, e, are rocked from the position shown in Fig. 2 to thatshown in Fig. 1 for the purpose stated and thereby causing the telephoneto be properly suspended until again needed for use.

When needed all that the operator has to do is to move the telephoneaway from the call box in a horizontal direction causing its shank f topass out through the bracket slot 1) and out through the inclined slotsD E by which the arms D, E, and their switch levers d, e, areautomatically caused to assume the positions shown in Fig. 2, thusautomatically cutting in and out the parts of the telephone abovementioned.

9 in Figs. 1, 2, 4 and 5 is a guide pin secured to the inside of the boxA between the switch levers d, e, for the purpose of properly guidingsaid switch levers and causing them to be brought in contact with therespective electrodes c e". 7

Having thus fully described the nature, construction, and operation ofmy invention, I wish to secure by Letters Patent and claim 1. The hereindescribed improved telephone switch consisting of a pair of slottedpivoted rocker arms having secured thereto respective switch leverscombined with electrodes (1 e" and a detachable hand telephone,substantially as and for the purpose set forth.

2. The herein described improved telephone switch consisting of astationary slotted bracket B and a pair of slotted pivoted rocker armsD, E, having inclined slots therein and the respective switch levers (1,c, secured to said arms substantially as and for the purpose set forth.

3. The herein described improved telephone switch consisting of astationary slotted bracket and a pair of pivoted slotted rocker armscombined with a hand telephone hav ing means substantially as describedfor actuating said rocker arms and suspending said telephone when not inuse as and for the purpose set forth.

4. The herein described improved telephone switch consisting of astationary slotted bracket and a pair of slotted rocker arms pro videdwith switch levers combined with electrodes for alternately changing thecalling and speaking circuits and a hand telephone having means foractuating said arms and adapted to be suspended on the switch devicewhen not in use substantially as and for the purpose set forth.

In testimony whereof I have signed my name to this specification, in thepresence of two subscribing witnesses, on this 13th day of April, A. D.1894.

JOSEPH BRODIE SMITH.

Witnesses:

ALBAN ANDRI JN, KITTIE M. HANSON.

